Choose Atrium Mortis
Choose Atrium Mortis if you want the Custom Volume Controls side of the pairing. Atrium Mortis launched in 2026.
Atrium Mortis vs The One Who
Atrium Mortis and The One Who both land in Action, Indie, Adventure on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Action, Indie, Adventure on Steam. Atrium Mortis (2026) is 1 year older than The One Who (2027). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose The One Who
Choose The One Who if you want the Playable without Timed Input and #category_playable_at_your_own_pace side of the pairing. The One Who launched in 2027.
Both Atrium Mortis and The One Who sit in Action, Indie, and Adventure on Steam and both list Stereo Sound and Surround Sound, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 Atrium Mortis |  The One Who | |
|---|---|---|
| Released | 2026 | 2027 |
| Genres | Action, Indie, Adventure | Action, Indie, Adventure |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | Price unknown |
| Steam reviews | — | — |
| Multiplayer | Single-player only | Single-player only |
| Developers | Let Me Cook Games | NUMBLINE |
Side by side
- Both share Action, Indie, Adventure on Steam.
- Atrium Mortis (2026) is 1 year older than The One Who (2027).
Atrium Mortis vs The One Who — FAQ
- Should I play Atrium Mortis or The One Who first?
- If you want chronology, Atrium Mortis (2026) came out before The One Who (2027). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
- Are Atrium Mortis and The One Who similar?
- They overlap on Action, Indie, Adventure on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.